{
\def\sym#1{\ifmmode^{#1}\else\(^{#1}\)\fi}
\begin{tabular}{l*{4}{c}}
\hline\hline
                    &\multicolumn{1}{c}{(1)}&\multicolumn{1}{c}{(2)}&\multicolumn{1}{c}{(3)}&\multicolumn{1}{c}{(4)}\\
                    &\multicolumn{1}{c}{headsed}&\multicolumn{1}{c}{headsed}&\multicolumn{1}{c}{headsed}&\multicolumn{1}{c}{headsed}\\
\hline
interR              &      0.2786\sym{***}&                     &      0.2673\sym{***}&                     \\
                    &    (0.0944)         &                     &    (0.0868)         &                     \\
[1em]
inter2R\_1           &                     &      0.2185\sym{**} &                     &      0.1257         \\
                    &                     &    (0.0850)         &                     &    (0.0919)         \\
[1em]
inter2R\_2           &                     &      0.3496\sym{***}&                     &      0.2308\sym{**} \\
                    &                     &    (0.0796)         &                     &    (0.0934)         \\
[1em]
inter2R\_3           &                     &      0.4137\sym{***}&                     &      0.2954\sym{***}\\
                    &                     &    (0.0779)         &                     &    (0.0844)         \\
[1em]
inter2R\_4           &                     &      0.7103\sym{***}&                     &      0.5971\sym{***}\\
                    &                     &    (0.0857)         &                     &    (0.0853)         \\
[1em]
inter2R\_5           &                     &      0.7350\sym{***}&                     &      0.6020\sym{***}\\
                    &                     &    (0.0610)         &                     &    (0.0556)         \\
[1em]
inter2R\_6           &                     &      0.7981\sym{***}&                     &      0.6536\sym{***}\\
                    &                     &    (0.0592)         &                     &    (0.0557)         \\
[1em]
inter2R\_7           &                     &      0.7507\sym{***}&                     &      0.6065\sym{***}\\
                    &                     &    (0.0656)         &                     &    (0.0689)         \\
[1em]
inter2R\_8           &                     &      0.1737\sym{*}  &                     &      0.0569         \\
                    &                     &    (0.0915)         &                     &    (0.0931)         \\
[1em]
inter2R\_9           &                     &      0.1737         &                     &      0.0523         \\
                    &                     &    (0.1392)         &                     &    (0.1356)         \\
[1em]
inter2R\_10          &                     &     -0.0085         &                     &     -0.1212         \\
                    &                     &    (0.1208)         &                     &    (0.1189)         \\
[1em]
inter2R\_11          &                     &     -0.1990         &                     &     -0.2664\sym{*}  \\
                    &                     &    (0.1744)         &                     &    (0.1484)         \\
[1em]
inter2R\_12          &                     &     -0.2207         &                     &     -0.2889\sym{*}  \\
                    &                     &    (0.1808)         &                     &    (0.1623)         \\
[1em]
inter2R\_13          &                     &     -0.4334\sym{***}&                     &     -0.5243\sym{***}\\
                    &                     &    (0.1458)         &                     &    (0.1147)         \\
\hline
Observations        &        6125         &        6125         &        6125         &        6125         \\
\hline\hline
\multicolumn{5}{l}{\footnotesize Standard errors clustered at the state level are in parentheses.}\\
\multicolumn{5}{l}{\footnotesize ***Significant at the 0.01 level. **Significant at the 0.05 level. *Significant at the 0.10 level.}\\
\end{tabular}
}
